scholarly journals Convective heat transfer characteristics of low Reynolds number nanofluid flow around a circular cylinder

10.30544/242 ◽  
2017 ◽  
Vol 23 (1) ◽  
pp. 83-97
Author(s):  
Yacine Khelili ◽  
Abderrazak Allali ◽  
Rafik Bouakkaz
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Fluid Flow ◽  
Volume Fraction ◽  
Low Reynolds Number ◽  
Pressure Coefficient ◽  
Flow Characteristics ◽  
Nano Particles ◽  
Low Reynolds ◽  
Energy Equations

Numerical investigation of heat transfer phenomena of low Reynolds number nano-fluid flow over an isothermal cylinder is presented in this paper. Steady state governing equations (continuity, N–S and energy equations) have been solved using finite volume method. Stationary heat transfer, and flow characteristics over the cylinder have been studied for water based copper nanofluid with different solid fraction values. The effect of volume fraction of nano- particles on the fluid flow and heat transfer were investigated numerically. It was found that at a given Nusselt number, drag coefficient, re-circulation length, and pressure coefficient increase by increasing the volume fraction of nano-particles.

scholarly journals A numerical study on convection around a square cylinder using Al2O3-H2O nanofluid

2014 ◽  
Vol 18 (4) ◽  
pp. 1305-1314 ◽  
Author(s):  
Mohammad Valipour ◽  
Reza Masoodi ◽  
Saman Rashidi ◽  
Masoud Bovand ◽  
Mojtaba Mirhosseini
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Volume Fraction ◽  
Numerical Study ◽  
Pressure Coefficient ◽  
Simple Algorithm ◽  
Square Cylinder ◽  
Flow And Heat Transfer ◽  
Recirculation Length ◽  
Energy Equations

In this paper, a numerical simulation has been performed to study the fluid flow and heat transfer around a square cylinder utilizing Al2O3-H2O nanofluid over low Reynolds numbers. Here, both Reynolds and Peclet numbers are varied within the range of 1 to 40and the volume fraction of nanoparticles (?) is varied within the range of 0<?<0.05. Two-dimensional and steady mass continuity, momentum and energy equations have been discretized using Finite Volume Method (FVM). SIMPLE algorithm has been applied for solving the pressure linked equations. The effect of volume fraction of nanoparticles on fluid flow and heat transfer were investigated numerically. It was found that at a given Reynolds number, the Nusselt number, drag coefficient, recirculation length, and pressure coefficient increases by increasing the volume fraction of nanoparticles.

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